Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High performance concrete with steel slag as admixture and aggregate and preparation method thereof

A concrete and aggregate technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as few researches, achieve simple preparation technology, good durability, and reduce production costs

Inactive Publication Date: 2014-02-05
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF3 Cites 41 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the research on steel slag is concentrated on its use as admixture and aggregate alone, and good research results have been obtained. However, there are few studies on steel slag as admixture and aggregate at the same time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Among the concrete raw materials, the mass percentages of cementitious materials, aggregates and mixing water are 21.2%, 71.9% and 6.9% respectively; %, steel slag fine powder 10% and slag fine powder 10%; coarse aggregate particle size 5~30mm crushed stone; medium aggregate: steel slag sand particle size 5mm~10mm, partially replace crushed stone, its dosage is 30%; Fine aggregate: the river sand fineness modulus is 2.6, and the sand rate is 38%, that is, the mass percentage of each component of the aggregate is: crushed stone 43.4%, steel slag sand 18.6% and river sand 38%; the quality of high-efficiency water reducer is 2.5% of the mass of the cementitious material, and the water-binder ratio is 0.33.

[0025] (2) Dry the granulated converter steel slag and slag until the moisture content is less than 1%; screen the dried granulated converter steel slag and slag into two grades, grade I is steel slag and slag with a particle size of less than 5mm, and grind them ...

Embodiment 2

[0034] (1) Among the concrete raw materials, the mass percentages of cementitious materials, aggregates and mixing water are 16.4%, 76.7% and 6.9% respectively; , steel slag powder 15%, slag powder 15%; coarse aggregate particle size of 5-30mm crushed stone; medium aggregate: steel slag sand with particle size of 5mm-10mm, partially replacing crushed stone, its dosage is 40%; Aggregate: The river sand fineness modulus is 2.6, and the sand rate is 35%, that is, the mass percentage of each component of the aggregate is: crushed stone 39%, steel slag sand 26% and river sand 35%; the water reducer is a cementitious material The mass percentage is 2.5%, and the water-binder ratio is 0.43.

[0035] (2) Dry the granulated converter steel slag and slag until the moisture content is less than 1%; screen the dried granulated converter steel slag and slag into two grades, grade I is steel slag and slag with a particle size of less than 5mm, and grind them Steel slag fine powder and slag...

Embodiment 3

[0044] (1) Among the concrete raw materials, the mass percentages of cementitious material, aggregate and water are 15.6%, 77.5% and 6.9% respectively; Micro powder 20% and slag micro powder 20%; coarse aggregate particle size 5~30mm crushed stone; medium aggregate: steel slag sand particle size 5mm~10mm, partially replace crushed stone, its dosage is 50%; fine aggregate : The river sand fineness modulus is 2.8, and the sand rate is 37%, that is, the mass percentage of each component of the aggregate is: crushed stone 31.5%, steel slag sand 31.5% and river sand 37%; the water reducing agent is the cementitious material mass percentage 1.5%, the water-binder ratio is 0.44.

[0045] (2) Dry the granulated converter steel slag and slag until the moisture content is less than 1%; sieve the dried steel slag into two grades, grade I is steel slag and slag with a particle size of less than 5mm, and grind it into steel slag powder and slag powder , Grade II is steel slag with a parti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high performance concrete with steel slag as an admixture and aggregate and a preparation method thereof. The concrete is composed of a cementing material, aggregate, a water reducer and mixing water. The cementing material is prepared by compounding, by mass, 50 to 80% of cement, 10 to 30% of superfine steel slag powder and 10 to 30% of superfine mineral slag, wherein the specific surface areas of the superfine steel slag powder and the superfine mineral slag are respectively controlled to be 400 to 600 m<2> / kg and 400 to 500 m<2> / kg. The aggregate is composed of broken stone, steel slag sand and river sand, wherein the particle size of the steel slag sand is 5 to 10 mm, the steel slag sand is used to partially replace the broken stone, and the addition amount of the steel slag sand is 20 to 50%. The high efficiency water reducer is dissolved in water in advance and then added with the mixing water. The preparation method provided by the invention is simple and can prepare concrete with a grade in a range of C20 to C60 and substantially improve the comprehensive utilization rate of the steel slag; and the prepared concrete has good work performance, mechanical properties, etc. and substantially improved endurance.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-performance concrete using steel slag as an admixture and an aggregate and a preparation method thereof. Background technique [0002] Concrete is the most widely used and used building material in the field of construction engineering. As human production and living activities expand to the ocean, a large number of ocean platforms will also be built in shallow or deep seas. This development trend will guide the development of modern buildings in the direction of high-rise, long-span, heavy-duty and light-weight structures. With the harsh environment of use, the demand for concrete with good workability, high strength and high durability is increasing. High-performance concrete has become a subject of research by scientific and technological workers. [0003] In recent years, research on high-performance concrete has focused on several aspects such...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B28/00C04B18/30C04B18/14
CPCY02W30/91
Inventor 陈平邹小平刘荣进赵艳荣韦家崭李志博向玮衡
Owner GUILIN UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com